code: def test_zeros():
      zeros = np.zeros((64, 64), np.uint8)
      feats = texture.haralick(zeros)
      assert not np.any(np.isnan(feats))
  
imports: import numpy
  from mahotas.features import texture
  import mahotas
  import mahotas.features._texture
  import pytest
label_desc: Use image node_id 14 for calling a global function with example usage: test_zeros() without return types